Stanford's Chiney Ogwumike (left) drives against Tennessee's Isabelle Harrison in the first half.

Photo: Wade Payne, Associated Press

Stanford's Chiney Ogwumike (left) drives against Tennessee's...

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Stanford forward Joslyn Tinkle (44) is pressured by Tennessee guard Ariel Massengale (5) in the second half of an NCAA college basketball game on Saturday, Dec. 22, 2012, in Knoxville, Tenn. Stanford won 73-60. (AP Photo/Wade Payne)

Stanford guard Toni Kokenis (31) puts a shot up past Tennessee guard Meighan Simmons (10) in the first half of an NCAA college basketball game on Saturday, Dec. 22, 2012, in Knoxville, Tenn. Stanford won 73-60. (AP Photo/Wade Payne)

Photo: Wade Payne, Associated Press

Stanford guard Toni Kokenis (31) puts a shot up past Tennessee...

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Stanford head coach Tara VanDerveer directs her team in the first half of an NCAA college basketball game against Tennessee on Saturday, Dec. 22, 2012, in Knoxville, Tenn. Stanford won 73-60. (AP Photo/Wade Payne)

Photo: Wade Payne, Associated Press

Stanford head coach Tara VanDerveer directs her team in the first...

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Stanford guard Toni Kokenis (31) drives against Tennessee guard Kamiko Williams (4) in the first half of an NCAA college basketball game on Saturday, Dec. 22, 2012, in Knoxville, Tenn. Stanford won 73-60. (AP Photo/Wade Payne)

Stanford forward Chiney Ogwumike has at least one career achievement that eluded her older sister.

Ogwumike had 21 points and a career-high 19 rebounds Saturday, and Stanford remained undefeated with a 73-60 victory at No. 10 Tennessee, giving the top-ranked Cardinal only their second win in Knoxville in 13 attempts.

Stanford won at Tennessee for the first time since an 82-65 victory on Dec. 15, 1996.

Ogwumike's older sister, Nneka Ogwumike of the WNBA's Los Angeles Sparks, scored 42 points in Stanford's 97-80 win over Tennessee last year. But the No. 1 pick in the most recent WNBA draft never won at Tennessee during her college career.

"One thing Nneka didn't do was get a win here at Tennessee, so I wanted to one-up her," Ogwumike said.

Bashaara Graves had 15 points for Tennessee (7-3).

Stanford's Amber Orrange scored 14 points. Toni Kokenis and Bonnie Samuelson each added 11 points, and Joslyn Tinkle had 10 points for the Cardinal, who host No. 2 Connecticut in their next game on Saturday.

"The most important thing now is that we keep improving and stay healthy," Stanford coach Tara VanDerveer said. "We've got great leadership and great chemistry. I'm hoping that we'll be playing better in March and April."

Stanford (11-0) was coming off a 53-49 squeaker at No. 21 South Carolina on Wednesday, but the Cardinal never trailed Tennessee.

Ogwumike, who entered the game averaging 21.9 points and 12.2 rebounds, had 13 points and 12 rebounds by halftime.